CVE search · CVE-2026-14266
CVE-2026-14266
high 7.8
7-Zip XZ Decompression Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the processing of XZ chunked data. Crafted XZ-compressed data can trigger an overflow of a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-30169.
Details
- Status
- Analyzed
- Published
- Last changed
- Source
- zdi-disclosures@trendmicro.com
- Weakness
- CWE-122
Severity
| Version | Score | Vector | Source |
|---|---|---|---|
| CVSS 3.1 | high 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
nvd@nist.govPrimary |
| CVSS 3.0 | high 7.0 | CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
zdi-disclosures@trendmicro.comSecondary |
Affected products
Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.
- 7-zip · 7-zip
References
- https://www.zerodayinitiative.com/advisories/ZDI-26-444/Third Party AdvisoryVDB Entry
- http://www.openwall.com/lists/oss-security/2026/07/17/12Mailing ListThird Party Advisory